WO2017078956A1 - Rasoir de sûreté et son manche - Google Patents

Rasoir de sûreté et son manche Download PDF

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Publication number
WO2017078956A1
WO2017078956A1 PCT/US2016/058435 US2016058435W WO2017078956A1 WO 2017078956 A1 WO2017078956 A1 WO 2017078956A1 US 2016058435 W US2016058435 W US 2016058435W WO 2017078956 A1 WO2017078956 A1 WO 2017078956A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
head
razor
slot
safety razor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2016/058435
Other languages
English (en)
Inventor
Mark E. HORTON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US15/767,442 priority Critical patent/US10889017B2/en
Publication of WO2017078956A1 publication Critical patent/WO2017078956A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/16—Safety razors with one or more blades arranged transversely to the handle involving blades with only one cutting edge
    • B26B21/165—Safety razors with one or more blades arranged transversely to the handle involving blades with only one cutting edge with the blade moulded into, or attached to, a changeable unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/16—Safety razors with one or more blades arranged transversely to the handle involving blades with only one cutting edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/52—Handles, e.g. tiltable, flexible
    • B26B21/521—Connection details, e.g. connection to razor heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/54—Razor-blades
    • B26B21/56—Razor-blades characterised by the shape

Definitions

  • This invention relates to certain new and useful improvements in safety razor construction including a new blade arrangement and handle for holding the same at a particularly useful cutting angle with respect to the user's face or skin.
  • Safety razors generally use a single, double edge safety razor blade which is manually inserted into the blade holder or razor head.
  • the handle of the safety razor is generally perpendicular to the single blade although some compression and bending of the blade can occur when the holder is tightened.
  • the razor is used manually and greatly depends on the ability of the shaver's wrist to hold the blade at the correct angle to cut hairs on the face.
  • a blade angle of approximately 30° has been shown to be very effective at cutting facial hair but it is difficult for the user to orient the blade of a conventional safety razor at that angle during shaving. Even when the user is able to hold the razor at the proper angle, the user's wrist is in a position which is not entirely stable. Indeed, oftentimes the angle between the blade and the face is not optimal and results in a less effective blade cut, which can cause skin irritation, nicks, and/or deep cuts.
  • Safety razors are limited in design by the actual double edge safety blade itself as well as the space between the plates.
  • the blade and shaving head are perpendicular to the face and the handle parallel to the face. In many razors, this results in a blade angle which is approximately 85° with the handle parallel to the face. To achieve the optimum 30° blade angle, the user must rotate the razor handle 55° which results in a 30° blade angle but an unstable hand position that can cause painful skin irritation.
  • 2,555,214 to Wallach et al. discloses a blade made from glass that is first ground to a sharp angle and then dipped in acid.
  • the blade angle is ground to an angle of 30° to try to achieve the desired optimum angle for shaving, but the holder does not assure that the angle is maintained during shaving.
  • Wallace also teaches away from using steel or other metal blades which, because of their thin construction, can be easily split.
  • US patent no. 9,015 951 to Howell et al. also discloses a series of blades in a cartridge that is used to more efficiently cut facial hair.
  • the present invention provides for improved razors that provide the cutting edges of the blades therein at the optimum cutting angle of 30° while keeping the handle parallel to the users face making it easier to control.
  • the razor is a safety or disposable razor that comprises a handle; a head on one end of the handle, said head adapted to hold a razor blade and having a top portion and a bottom portion; and a slot configured on the bottom portion, with the slot configured and dimensioned for receiving a first portion of a razor blade which terminates at a blade edge and for holding the blade edge at a predetermined angle with respect to the bottom portion.
  • the top portion of the head is further configured to hold the blade in the slot to lock the blade in place with the blade edge at the predetermined angle.
  • a related embodiment is one wherein the head has a second slot which is adapted to hold a second razor blade having a top portion and a bottom portion, with the second razor blade having a first portion which terminates at a blade edge and which is received in the slot for holding the blade edge at a predetermined angle with respect to the bottom portion; wherein the second blade is held in the second slot by the top portion of the head to lock the blade in place with the second blade edge at the predetermined angle.
  • the razor may be made or metal or an engineering plastic and configured as a safety razor.
  • the foregoing embodiments can be made as a disposable razor wherein the top and bottom portions of the head are made of a plastic.
  • the razor is a safety razor that includes a handle; a head on one end of the handle, with the head having a top plate and a bottom plate; and a slot that is configured on first and second portions of the bottom plate.
  • Each slot is configured and dimensioned for receiving one portion of a razor blade that has first and second portions which each terminate at a blade edge, with the slots further configured for holding each blade edge at a predetermined angle with respect to the bottom plate.
  • the preferred angle is approximately 30° with respect to the bottom plate.
  • the head further comprises two structures which move downwardly toward the intersection of the head and the handle; said structures designed to bend each blade portion to hold it in its respective slot.
  • the first and second portions are first and second halves which together would form a conventional double edge safety razor blade.
  • a safety razor comprising a handle; a head on one end of the handle, with the head adapted to hold a conventional safety razor blade and having a top portion which, when lowered, will securely hold the separated conventional safety razor blade; and a slot configured on first and second portions of the bottom plate, each slot configured and dimensioned for receiving one half of the razor blade and for holding the blade edge at a predetermined angle with respect to the bottom plate.
  • each slot is preferably configured and dimensioned for holding the blade edge of the blade half at an angle of approximately 30° with respect to the bottom plate.
  • the head typically comprises two structures which move downwardly toward the intersection of the head and the handle; said structures designed to place each blade half into a slot.
  • the invention is also directed to a product that is a combination comprising any one of the safety razors described herein and a conventional size or longitudinally split razor blade received therein.
  • a product that is a combination comprising any one of the safety razors described herein and a conventional size or longitudinally split razor blade received therein.
  • two safety razor blade portions are received therein with each blade portion held in its respective slot at the desired angle.
  • the safety razor blade portions are first and second halves which together would form a conventional safety razor blade.
  • the combination can comprise a safety razor that receives a conventional safety razor blade therein wherein the head includes a top portion which, when lowered, will securely hold the separated conventional safety razor blade halves into the slots.
  • Another embodiment of the invention is directed to a method of making a safety razor with one or two fixed blade edges at a predetermined cutting angle, which comprises providing a handle and head for the safety razor; and making a slot on one or each side of a bottom plate of the head, with each slot configured and dimensioned to receive a portion of a razor blade with the blade edge fixed at a predetermined angle.
  • each slot is configured and dimensioned for holding the blade edge of the blade portion at the preferred optimum angle of approximately 30° with respect to the bottom plate of the head.
  • the head may further include two structures which move downwardly toward the intersection of the head and the handle, with the structures designed to bend each blade half to hold it in its respective slot and form two fixed blade edges at the predetermined angle.
  • the head is adapted to hold a conventional safety razor blade and the method further comprises placing a conventional safety razor blade in the head and moving a top portion of the head towards the blade to securely hold the separated conventional safety razor blade into first and second halves and to direct the blade halves their respective slots and form two fixed blade edges at the predetermined angle.
  • Figure 1 illustrates a conventional safety razor
  • FIG. 2 illustrates the top plate according to the new invention
  • Figure 3 is a perspective view of a split standard safety razor blade according to the invention.
  • Figure 4 is an underside view of the split safety razor of Figure 3;
  • Figure 5 is a side view of the split safety razor of Figure 3.
  • Figure 6 is an illustration of the split safety razor of the present invention as it comes into contact with the user's face. Detailed Description of the Invention
  • the present invention now provides a safety razor design which will cut facial hair at the optimum shaving angle of approximately 30° while keeping the handle parallel to the face instead of rotated 55° away from it. This is generally accomplished by providing a standard safety razor blade that is split down the longitudinal center of the blade into two halves and by providing a novel handle head that is configured to hold the split blades at 30° angle.
  • the invention provides for a single double edge razor blade to be split in two.
  • the blades are then inserted into a slot which holds the blade at an angle of approximately 30° enabling the user to hold the handle parallel to what is being cut instead of the uncomfortable 55° handle position.
  • the invention also provides a razor construction of which the blade is split into and then received in a slot which secures the blade.
  • the blade portions or halves are held securely in their respective slots. Having secure blade edges allows for effective shaving by permitting the user to shave in a single downward direction while holding the blades under tension, eliminating the blade chatter/flutter of most common safety razors. This is a superior method in that all pressure is directed downward in a straight line reducing accidental horizontal movement and is believed to be the most effective method of using a razor with a blade split by a user.
  • This configuration also allows minimal blade exposure while enabling the user to control the aggressiveness based on the pressure applied. This configuration is superior to previous safety razors as any pressure applied to current safety razors on the market, will result in severe cuts to the users face.
  • FIG 1 illustrates a conventional safety razor (1) according to the prior art.
  • This razor (1) includes a handle (2), a head (3) with a bottom plate (5) and a top plate (4).
  • FIG. 2 illustrates the top plate (4) according to the invention with standard cylinders
  • each blade half is inserted into the left and right slots of the bottom plate. With each blade half in their respective slots, the top plate's cylinders (6) are inserted into the holes (8) of the bottom plate. When this occurs, the flaps (10) that extend from the center of the top plate connect with and bend each blade half down to the bottom plate resulting in a secure, precise, taut fit with no blade flutter.
  • Figure 3 illustrates the split halves of the standard double edge safety razor blade (7) according to the invention.
  • Figure 3 also illustrates slots (9) on either side of the bottom plate (5) into which the razor blade halves are inserted.
  • the top plate's cylinders (6) are inserted into the holes (8) of the bottom plate, the blade halves are bent to be locked in the slot at the correct optimum shaving angle. This feature is further shown in Figures 4 and 5.
  • the invention accomplishes this goal by a user breaking the razor blade (7) in half along the longer access of the razor head (3).
  • the razor blade (7) is then inserted into a slot (9) into the bottom plate (5) of the razor head (3).
  • the top plate (4) of the razor head (3) is then lowered so that it makes contact with the bottom plate by a standard mechanism in the safety razor (1) not shown here.
  • the 3 cylinders (6) move into the 3 holes (8) and hold the razor blade (7) in a tight position. Indeed, when the top plate (4) is tightened to the bottom plate, (5) the largest portion of the razor blade (7) not in the slot (9) will bend resulting in a much lower profile head (3) and giving the user much more clearance than conventional safety razors currently on the market.
  • An alternative way of making slots in the razor head is to place structures on the top plate which are capable of producing a slot of 30°.
  • Another alternative way of making this razor is to stack two or more slots on either/each side of the bottom plate resulting in a "cartridge" type of razor. In this way, the razor is effectively the cartridge with only the blades being replaceable. This will result in the most inexpensive version of the present shaver.
  • Another alternative way of making this style razor is to incorporate my split and slotted design with others currently on the market such as closed comb, open comb, straight bar and slanted razors with either mild blade gaps, aggressive blade gaps or gaps anywhere in between.
  • the slot (9) holds the razor blade (7) at a 30° angle measured from the outside portion of the razor head (3) and the user's face.
  • One of the features of this invention is to provide a new shaver that will cut facial hair efficiently so that no further shaving is necessary for a period of 24 hours.
  • Another feature of this invention is to provide a new shaver that will reduce nicks and cuts, as well as abrasions, during the shaving process.
  • Another feature of the invention is to provide a new shaver that facilitates receipt of a split blade design.
  • By splitting the blades it enables the top (4) and bottom (5) plates to be widened allowing better handle clearance when holding the handle parallel to the face and an overall thinner head (3) to get into tighter spots such as under the nose.
  • the head can be configured to hold only one of the blades or two of the split blades.
  • the razor can be a single edge safety razor or a single edge plastic disposable razor.
  • Another feature of this invention is to enable the use of a wider bottom plate (4) due to the split razor configuration of this shaving device, providing additional clearance space between the shaving handle (2), razor (1), and user's face.
  • This shaver design holds the blades very tight against the bottom plate resulting in no blade flutter.
  • Current conventional safety razors hold their blades securely but without much tension on the cutting portion of the blade.
  • the structure of the present split razor blade and handle easily achieves these and provides greater and easier manipulation of the handle and head during use to provide optimum cutting of facial hair by the user.
  • a preferred construction of the safety razor is achieved using metal heads and handles. These provide the desired feel of a heavy, sturdy razor that can be used with minimal effort while the weight of the device contributes to a smooth shave.
  • the handle and head can be designed to hold only one-half of the blade and thus would be configured with only one side available for cutting.
  • the handle and head could be made of metal as described herein or if desired, could be made of plastic so that the shaver could be disposable.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)

Abstract

L'invention concerne un rasoir de sûreté, lequel rasoir comprend un manche ; une tête sur une extrémité du manche, la tête étant apte à maintenir une lame de rasoir et ayant une plaque supérieure et une plaque inférieure ; une lame de rasoir ayant des première et seconde parties qui se terminent chacune au niveau d'un bord de lame ; et une fente configurée sur des première et seconde parties de la plaque inférieure, chaque fente étant configurée et dimensionnée pour recevoir une partie de la lame de rasoir et pour maintenir la lame selon un angle prédéterminé par rapport à la plaque inférieure. L'angle de bord de lame le plus préférable est d'approximativement 30° par rapport à la plaque inférieure.
PCT/US2016/058435 2015-11-03 2016-10-24 Rasoir de sûreté et son manche Ceased WO2017078956A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/767,442 US10889017B2 (en) 2015-11-03 2016-10-24 Safety razor and handle therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562250202P 2015-11-03 2015-11-03
US62/250,202 2015-11-03

Publications (1)

Publication Number Publication Date
WO2017078956A1 true WO2017078956A1 (fr) 2017-05-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2016/058435 Ceased WO2017078956A1 (fr) 2015-11-03 2016-10-24 Rasoir de sûreté et son manche

Country Status (2)

Country Link
US (1) US10889017B2 (fr)
WO (1) WO2017078956A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017078956A1 (fr) * 2015-11-03 2017-05-11 Horton Mark E Rasoir de sûreté et son manche
USD901776S1 (en) * 2019-04-24 2020-11-10 Edgewell Personal Care Brands, Llc Safety razor
USD968023S1 (en) * 2020-12-14 2022-10-25 Hans-Jürgen Müller Gmbh & Co.Kg Safety razor
USD1036006S1 (en) * 2021-06-29 2024-07-16 2754980 Ontario Inc. Safety razor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2120940A (en) * 1934-07-12 1938-06-14 Jacob T Basseches Safety razor and blade therefor
US2362851A (en) * 1944-01-07 1944-11-14 Joseph F C Przybysz Safety razor
US2648363A (en) * 1951-02-06 1953-08-11 Weber Alfred Safety razor blade plane
US3777396A (en) * 1972-06-01 1973-12-11 Warner Lambert Co Cartridges having tandemly mounted cutting edges on two sides thereof

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US1832834A (en) * 1929-12-13 1931-11-17 Gillette Safety Razor Co Safety razor
US1822766A (en) * 1930-09-17 1931-09-08 Michael J Duffy Safety razor and hair cutter
US1822903A (en) * 1930-11-28 1931-09-15 Gillette Safety Razor Co Safety razor
US2141339A (en) 1935-08-26 1938-12-27 Bauerle Paul Safety razor
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US2555214A (en) 1948-02-04 1951-05-29 Associated Dev & Res Corp Method of producing glass razor blades and product thereof
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US4146958A (en) 1976-10-15 1979-04-03 Warner-Lambert Company Safety razor
US4389773A (en) * 1981-04-30 1983-06-28 The Gillette Company Shaving implement
US4459744A (en) * 1982-02-04 1984-07-17 Alan K. Roberts Razor blade apparatus and method
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JP3546865B2 (ja) 2001-06-19 2004-07-28 晴行 北野 二枚替刃型かみそり
WO2007116397A2 (fr) 2006-04-10 2007-10-18 Ilan Grunberg Systeme de lame de tete de rasoir de securite
EP2207651A4 (fr) 2007-10-12 2012-02-15 American Safety Razor Rasoir à paires de lames modulaires
EP2537649B1 (fr) 2011-06-21 2013-07-17 The Gillette Company Cartouche de rasoir dotée d'un élément qui vient en contact avec la peau
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WO2014130935A1 (fr) * 2013-02-22 2014-08-28 Wertz Zachary R Rasoir pour le rasage
US20150352737A1 (en) * 2014-06-05 2015-12-10 Stanley Lee Hickam Double edge safety razor with razor blade alignment
US20180161999A1 (en) * 2015-06-24 2018-06-14 Amir DEPAZ Razor blade assembly
WO2017078956A1 (fr) * 2015-11-03 2017-05-11 Horton Mark E Rasoir de sûreté et son manche
US9840014B2 (en) * 2016-03-25 2017-12-12 Avraham Gilor Safety razor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2120940A (en) * 1934-07-12 1938-06-14 Jacob T Basseches Safety razor and blade therefor
US2362851A (en) * 1944-01-07 1944-11-14 Joseph F C Przybysz Safety razor
US2648363A (en) * 1951-02-06 1953-08-11 Weber Alfred Safety razor blade plane
US3777396A (en) * 1972-06-01 1973-12-11 Warner Lambert Co Cartridges having tandemly mounted cutting edges on two sides thereof

Also Published As

Publication number Publication date
US20180290319A1 (en) 2018-10-11
US10889017B2 (en) 2021-01-12

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